Before the base closure of Naval base Charleston, DRMO had a mountain of
R390s.
This was in the gold reclamation era that did not last too long.
There was a guy with an air chisel removing these 'gold' connectors from
the chassis and modules.
With many 55 gallon drums of these connectors, there was no gold.
I do not know what the gold colored plating was, but, it was not gold.
Gold does not corrode.
A local scrap yard bought these R390 receivers and dumped them into a
furnace to recover the aluminum.
73
Glenn
WB4UIV
On 6/12/2026 2:37 PM, Fred Moore via R-390 wrote:
Hi Barry,
Yes, that one would do. We see it has some environmental corrosion of the
gold. But there's no pitting. I can get that cleaned-up with De-Oxit and
dental brush that looks like a mini test tube cleaning brush.
Could you let it go? I'm in the ARRL 'call book' under WN9i.
- Fred
------ Original Message ------
Received: Fri, 12 Jun 2026 05:59:52 PM GMT
From: n4buq<[email protected]>
To: Barry<[email protected]>Cc: Fred Moore<[email protected]>, R-390
Mailing List<[email protected]>
Subject: Re: [R-390] R-390 IF: Looking for 20-pin socket and plug
Here’s a picture.
Thanks,
Barry
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Glenn Little ARRL Technical Specialist QCWA LM 28417
Amateur Callsign: [email protected] AMSAT LM 2178
QTH: Goose Creek, SC USA (EM92xx) USSVI, FRA, NRA-LM ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"
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